Hi NANOGers, I've updated my DoS presentation - will begin teaching this topic tomorrow. It's in my website, together with the other network-security presentations I gave this term, mainly DNS and routing security; there are few more topics I'll cover this term, to be added soon. And, of course, there's also my `applied intro to crypto' and related presentations. Anybody interested and/or willing to provide constructive feedback is always welcome - and feedback (even less constructive :) ) is highly appreciated. However, please send me directly, this is off-topic enough and nanog isn't the forum to discuss. Unless there's something you really think of interest to the entire community, of course. Peace (hopefully, in Ukraine too), Amir -- Amir Herzberg Comcast professor of Security Innovations, Computer Science and Engineering, University of Connecticut Homepage: https://sites.google.com/site/amirherzberg/home `Applied Introduction to Cryptography' textbook and lectures: https://sites.google.com/site/amirherzberg/applied-crypto-textbook <https://sites.google.com/site/amirherzberg/applied-crypto-textbook>